Separated plankton sample collecting device

Abstract

The invention discloses a separated plankton sample collecting device, relates to the technical field of marine equipment, and aims to overcome the mutual influence between an underwater environment and a sampling and collecting netting gear and analyze the problem that sampling interferes with aquatic sample collection. According to the invention, the netting bracket, the fishing net, the sliding lead, the folding driving wheel and the sliding reinforcing block are arranged, so that the interference and influence of a collection water area environment on collection and fishing are reduced; the accuracy of underwater organism population sampling survey is improved, the coordination ability of collection flux to population density is improved, and the damage degree of sampling collection to underwater ecology is reduced. By arranging the sampling cylinder, the sampling cavity, the permeable layer, the butt joint arm and the butt joint mounting seat, the rationality of the collection amount of biological samples is improved, the density of aquatic organisms in a circulation path is reduced, and the swimming stress when the aquatic organisms pass through the collection device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of marine equipment, and in particular to a separation type plankton sample collecting device. Background Art

[0002] As the early life history stage of fish, fish eggs and fry are the most vulnerable stage of the fish life cycle and are easily affected by environmental stress and human activities. The abundance of fish eggs and fry at this stage will directly affect the abundance or scarcity of fish resources, which in turn leads to fluctuations in fish populations. Therefore, resource monitoring and assessment of fish eggs and fry are particularly important. It is one of the important steps in ecosystem-based fishery resource management and is of great significance for the conservation and sustainable development and utilization of fishery resources. For fish eggs and fry, independent scientific investigations by fisheries are the only way to obtain information on their resources. To date, large-scale plankton nets are still the main sampling nets for collecting fish eggs and fry. Traditional plankton acquisition devices usually use nets with suitable filtration mesh to make a fishing structure. At the tail of the fishing net, containers such as collection bottles are installed through reinforcing ribs, so that underwater plankton such as captured fish fry and juvenile aquatic organisms can be sampled and collected. Common fishing methods include trawl nets, special fishing nets, and floating in-situ collection nets.

[0003] In the prior art, plankton sampling fishing nets are usually set on ships or other watercraft, and the sampling fishing nets are carried by ship equipment in the plankton survey waters, so as to salvage according to the actual situation, thereby speeding up the sampling and fishing efficiency. However, the existing plankton survey and sampling fishing nets usually rely on manual operation, which is time-consuming, and the fishing effects vary greatly when used in different water conditions, making it difficult to adapt to modern plankton sampling surveys.

[0004] In the prior art, for example, the U.S. invention patent US20160003713A1 discloses a multi-environment aquatic biological sampling system, in which a displacement device such as a winch cable is used to provide displacement drive to adjust the overall underwater position of the aquatic biological sampling net cover and the sampling and analysis channel; under the net of the fishing net, the underwater organisms gradually pass through the channel of the sample analysis chamber in the set channel, and are analyzed under the characteristic collection of the underwater camera assembly, thereby completing the collection and analysis of aquatic species. In this technical solution, when the underwater conditions in the sampling water area are poor, the analysis chamber may be easily blocked by the underwater organisms caught in the net, and it is difficult to adapt to the population survey work of plankton sampling and analysis in various waters; at the same time, the fishing and analysis system relies on the automatic analysis of electrical equipment, which may be difficult to intercept the sampled samples, and may easily miss the analysis or inaccurate analysis.

[0005] For example, the US invention patent US5578768A discloses a sampling and collecting device for collecting small aquatic organisms. In this invention patent, a collection cylinder with flow discharge and pressure relief capability is installed at the tail of the conical trawl net cover, so that a small amount of aquatic organisms can be caught for sampling and analysis on board ships and other watercraft. In this technical solution, the tail collection cylinder of the leakage filter may easily cause blockage when collecting aquatic organisms, thereby causing aquatic organisms such as plankton in the fishing channel to escape; at the same time, since the trawl net cover part has no support from the reinforced structure, it may be easy for the net body to be entangled or twisted. In addition, the collection cylinder at the tail end may have a cavity gap during quick installation, causing the collection cylinder to fall off, which may make it difficult to conduct a stable and efficient plankton sampling survey. Summary of the invention

[0006] The purpose of the present invention is to provide a separated plankton sample collection device to overcome the shortcomings of the prior art, such as the mutual influence between the underwater environment and the sampling and collection net, which reduces the sampling efficiency of aquatic population survey and analysis, and the interference of analysis and sampling with the assembly of aquatic samples.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A separate plankton sample collection device comprises a collecting tube, a sampling and analysis channel is arranged in the collecting tube, a net support and a fishing net are arranged at one end of the collecting tube, the net support and the fishing net form a conical channel, and the conical channel guides aquatic organisms to pass through the sampling and analysis channel. A folding driving wheel and a sliding wire are arranged on the net support, the folding driving wheel is connected to the sliding wire by power, a group of sliding reinforcement blocks are slidably connected to the sliding wire, the other end of the sliding reinforcement block is fixedly connected to the fishing net, a sliding reinforcement block farthest from the collecting pipe is fixedly connected to the sliding wire, and the sliding wire can drive the fishing net to stretch and fold along the axial direction of the net support; By setting up net supports, fishing nets, sliding wires, folding drive wheels and sliding reinforcement blocks, the underwater automatic control and intelligent expansion capabilities can be improved, the intensity of manual operation and the frequency of manual intervention can be reduced, and the interference and influence of the collection water environment on the collection and fishing can be reduced; the capture and escape of underwater organisms such as plankton can be reduced, and the accuracy of underwater biological population sampling and survey can be improved; the sampling and collection efficiency can be improved, the coordination ability of the collection flux to the population density can be improved, and the degree of damage to the underwater ecology caused by sampling and collection can be reduced.

[0008] Preferably, a coarse filter screen is provided at the end of the fishing net away from the collecting pipe, the upper end of the coarse filter screen is hinged to the net support, and the coarse filter screen blocks a larger volume of collected objects from entering the conical channel; By setting up coarse filter plates and net supports, the filtration pressure of the collection and fishing channel is reduced, and the smoothness of the fishing flow of plankton sampling and fishing is improved; the capture accuracy of sampling and collection that changes the fishing flux is improved, the dredging pressure is reduced, the working time and stability of underwater sampling and collection are increased, and the efficiency of sampling and survey of aquatic biological populations is improved.

[0009] Preferably, the right end of the collecting pipe is hinged to the net support, the collecting pipe is provided with a deflection base, the deflection base is fixedly connected with a telescopic rod, the other end of the telescopic rod is fixedly connected to the net support, and the telescopic rod adjusts the deflection angle of the net support relative to the collecting pipe; By providing a net support, a deflection base and a telescopic rod, the accuracy of the net flux for sampling and catching underwater biological population surveys is improved, the coordination and control capabilities of the collection flux and the underwater biological density are improved, and the use scope of the sampling and collecting device is increased; the ability of the collection device to resist collision and blockage during use is improved, the service life of the collection device is increased, and the difficulty and cost of maintenance are reduced.

[0010] Preferably, the fishing net is made of elastically deformable material; The structural shape stability of the conical channel is improved, and at the same time the ability to resist impact and scratches during fishing is improved, the influence of underwater environmental conditions on the conical channel during the collection and fishing process is reduced, and the stability of underwater sampling and fishing flux is improved.

[0011] Preferably, a sampling cylinder is provided at the other end of the sampling and analysis channel, a sampling cavity is provided in the sampling cylinder, a water-permeable layer is provided at one end of the sampling cavity away from the collecting tube, a docking arm is provided on the collecting tube, the other end of the docking arm is slidably connected to a docking mounting seat through a spring, the sampling cylinder is fixedly connected to the docking mounting seat, and the docking arm guides the sampling cavity to dock with the sampling and analysis channel; By arranging a sampling tube, a sampling cavity, a permeable layer, a docking arm and a docking mounting seat, the collection, capture and bottling and storage operations of biological samples can be simplified, the probability of leakage during the collection of biological samples is reduced, the analysis and investigation efficiency and accuracy of the collection device are greatly improved, the rationality of the collection amount of biological samples is improved, and the frequency of filtering and collecting plankton by the collection device during the sampling and capturing process is reduced; the patency of the biological flow path during the collection and capturing process is improved, the disability and mortality rate of plankton caused by fishing actions such as docking and filtering is reduced, and the contact damage of the flow path of the collection device to the collected organisms is reduced; the density of aquatic organisms in the flow path is reduced, the swimming stress of aquatic organisms when passing through the collection device is reduced, and the difficulty of automated collection and analysis processing is reduced.

[0012] Preferably, a backwash cover is fixedly connected to the collecting pipe, and a backwash channel is provided in the backwash cover, and the backwash channel guides the water to flow to the sampling and analysis channel and the tapered channel; By setting up a backwash hood and a backwash channel, the reliability of the collection device in switching between various water conditions is improved, the accuracy of the collection device in resetting collection and fishing is improved, and the accuracy of biological collection and retention is improved.

[0013] Preferably, the sampling chamber is provided with an automatic sealing cover, and a sealing spring is fixedly connected between the automatic sealing cover and the side wall of the sampling chamber, and the sealing spring drives the automatic sealing cover to keep the sampling chamber closed; By providing an automatic capping and a capping spring, the utilization efficiency of the aquatic organism collection space is improved, the need for manual intervention in the aquatic organism collection is reduced, and the ease of use and collection efficiency of the collection device are improved.

[0014] Preferably, a resistance-increasing telescopic rod is fixedly connected to the docking mounting seat, the other end of the resistance-increasing telescopic rod is rotatably connected to a flow-blocking member, the docking mounting seat is hinged to the flow-blocking member, and the resistance-increasing telescopic rod controls the deflection of the flow-blocking member; By providing a docking mount, a resistance-increasing telescopic rod and a flow-blocking member, the control convenience of the assembly docking and separation process can be reduced, the need for the collection device to be separated from the underwater environment during the assembly process can be reduced, the efficiency of the collection device in collecting aquatic organisms underwater can be improved, and the use efficiency of the collection device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of a separated plankton sample collection device of the present invention; Figure 2 It is a schematic diagram of the connection relationship between the adjacent net support and the fishing net; Figure 3 It is a schematic diagram of the assembly relationship between the reinforcing edge and the fishing net and the net support; Figure 4 yes Figure 1 A local enlarged schematic diagram of the middle A; Figure 5 yes Figure 1 A partial enlarged schematic diagram of point B in the middle; Figure 6 yes Figure 1 A partial enlarged schematic diagram of point C in the middle.

[0017] Figure numbers: collecting tube 10; sampling and analysis channel 11; net support 12; fishing net 13; mounting seat 14; coarse filter plate 15; folding drive wheel 20; sliding wire 21; sliding reinforcement block 22; reinforced connecting hole 23; attachment line 24; reinforced edge 25; hinged seat 27; deflection base 28; telescopic rod 29; synchronous connecting rod 30; sampling tube 40; sampling cavity 41; permeable layer 42; automatic sealing 43; sealing spring 44; backwash cover 45; backwash channel 46; docking mounting seat 47; resistance-increasing telescopic rod 48; flow blocking member 49; docking arm 50. DETAILED DESCRIPTION

[0018] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0019] The specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on another element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] Embodiment 1 Refer to the attached Figure 1 , Attachment Figure 2 And attached Figure 3As shown, the present invention provides a separated plankton sample collection device, including a collecting tube 10, a sampling and analysis channel 11 is provided in the collecting tube 10, a collection and analysis probe is provided in the sampling and analysis channel 11, a net support 12 and a fishing net 13 are provided at one end of the collecting tube 10, the fishing net 13 is fixedly connected to the side wall of the sampling and analysis channel 11, the net support 12 and the fishing net 13 form a tapered channel, and the tapered channel guides the sampled aquatic organisms to pass through the sampling and analysis channel 11. A folding driving wheel 20 and a sliding wire 21 are provided on the net support 12. The folding driving wheel 20 is connected to the sliding wire 21 by power. A group of sliding reinforcement blocks 22 are slidably connected to the sliding wire 21. The other end of the sliding reinforcement block 22 is fixedly connected to the fishing net 13. A sliding reinforcement block 22 farthest from the collecting pipe 10 is fixedly connected to the sliding wire 21. The sliding wire 21 can drive the fishing net 13 to stretch and fold along the axial direction of the net support 12 through the sliding reinforcement block 22. A mounting seat 14 is provided on the collecting pipe 10. The collecting pipe 10, the net support 12 and the fishing net 13 are mounted on the ship through the mounting seat 14. According to actual needs, a driving component for axial extension or circumferential rotation of the mounting seat 14 can be provided to drive the collecting device body to adjust the depth and the direction of the net underwater. At the same time, a driving component can also be provided to drive the collecting device body to deflect relative to the mounting seat 14, thereby driving the collecting device body to adjust the angle of the conical channel to collect plankton in the net underwater. Four net racks 12 are arranged at the right end of the collecting pipe 10, and a fishing net 13 is arranged between two adjacent net racks 12. Two longer sides of the fishing net 13 are fixed on the two adjacent net racks 12, and the left side of the fishing net 13 is fixed in the side wall of the sampling and analysis channel 11. The conical channel formed by the net racks 12 and the fishing net 13 guides the caught plankton and other aquatic organisms into the sampling and analysis channel 11 at the left end. A reinforcement edge 25 is fixedly connected to the side of the fishing net 13, and two groups of reinforcement connection holes 23 are arranged on the reinforcement edge 25 in the length direction of the net support 12. The folding driving wheel 20 arranged on the net support 12 drives the sliding wire 21 to rotate, and the linear speed direction of the sliding wire 21 is consistent with the length direction of the net support 12. A group of sliding reinforcement blocks 22 are evenly distributed in the length direction of the sliding wire 21, and the sliding reinforcement blocks 22 are provided with reinforcement connection holes 23. The sliding reinforcement blocks 22 are slidably connected to the sliding wire 21 through the reinforcement connection holes 23. On the wire 21, the sliding reinforcement block 22 at the far right end in the direction away from the net support 12 is fixedly connected to the net support 12 and moves with the sliding wire 21. The other end of the sliding reinforcement block 22 is fixedly connected to the reinforcement edge 25 through the attachment line 24. When the rightmost sliding reinforcement block 22 moves along the sliding wire 21 in the direction of its linear velocity, the remaining sliding reinforcement blocks 22 drive the reinforcement edge 25 and the fishing net 13 to slide in the length direction of the net support 12, thereby stretching or folding the fishing net 13 in the length direction of the net support 12. According to the actual plankton collection water conditions, the two longer sides of the fishing net 13 are adjusted to stay in the extended or folded position on the net support 12, so as to control the net collection opening state formed by the four sides of the fishing net 13 at the right end of the conical channel, which can adapt to various water conditions to catch plankton, and expand the scope of aquatic biological population investigation when carried by ships and other water vessels; the device connection method is simple and reliable, the manufacturing cost is low, the control is simple, and it can adapt to the development trend of modern automatic control. When surveying the population of underwater organisms such as plankton sampling and collection, it can improve the underwater automatic control and intelligent expansion capabilities, reduce the intensity of manual operation and the frequency of manual intervention, improve the collection efficiency and stability, improve the adaptability of underwater collection to changes in terrain, reduce the interference and influence of the collection water environment on the collection and fishing, and the variable collection and fishing opening can reduce the fishing escape of underwater organisms such as plankton, and improve the accuracy of underwater biological population sampling and investigation; When the fishing net 13 is being stretched or folded, the conical fishing channel formed by the net support 12 and the fishing net 13 has a variable length of net in the collecting and fishing direction, and the collecting intensity can be adjusted according to the actual density of underwater organisms, so as to maintain the stability of the collected and caught amount of aquatic organisms such as plankton, improve the sampling and collection efficiency, improve the coordination ability of the collection flux to the population density, and reduce the degree of damage to the underwater ecology caused by sampling and collection.

[0022] Refer to the attached Figure 1 and attached Figure 4 As shown, a coarse filter plate 15 is provided at the end of the fishing net 13 away from the collecting pipe 10, and the upper end of the coarse filter plate 15 is hinged to the net support 12. The filtering volume of the coarse filter plate 15 is larger than the filtering volume of the fishing net 13, and the coarse filter plate 15 blocks the larger volume of collected objects from entering the conical channel; The right ends of the two net supports 12 on the upper side are rotatably connected to the coarse filter screen plate 15. Under the action of gravity, the coarse filter screen plate 15 can block large-volume collected aquatic organisms and other debris entering the conical collection and fishing channel in the collection and fishing direction, thereby reducing the filtration pressure of the collection and fishing channel, avoiding large-volume aquatic organisms from entering the conical channel and the sampling and analysis channel 11 to form blockages, and improving the smoothness of the fishing flow of plankton sampling and fishing; in addition, when the coarse filter screen plate 15 is unilaterally hinged and vertically placed, large-volume aquatic organisms that accidentally enter the conical channel can escape from the capture under the hinged arrangement of the coarse filter screen plate 15, thereby improving the capture accuracy of sampling and collection that changes the fishing flux, reducing the dredging pressure, increasing the duration and stability of underwater sampling and collection work, reducing the probability of underwater errors in sampling and collection work, and improving the efficiency of sampling and survey of aquatic populations.

[0023] See attached Figure 1 and attached Figure 5 As shown, the right end of the collecting pipe 10 is hinged to the net support 12 through the hinge seat 27, the end of the net support 12 facing the collecting pipe 10 is fixedly connected with the hinge seat 27, the end of the collecting pipe 10 is hinged to the hinge seat 27, the collecting pipe 10 is provided with a deflection base 28, the deflection base 28 is fixedly connected with a telescopic rod 29, the other end of the telescopic rod 29 is fixedly connected to the net support 12, and the telescopic rod 29 adjusts the deflection angle of the net support 12 relative to the collecting pipe 10; A synchronous connecting rod 30 is provided between two adjacent net supports 12. The synchronous connecting rod 30 is connected to the net support 12 by a track that accommodates relative sliding. The synchronous connecting rod 30 accommodates the relative sliding of the net support 12 when the net support 12 is angularly deflected relative to the collecting pipe 10 through the hinge seat 27. The net support 12 and the synchronous connecting rod 30 connected thereto can be angularly deflected relative to the collecting pipe 10 under the extension and contraction of the telescopic rod 29, thereby changing the size of the collection and fishing opening of the conical channel, improving the control effect of the sampling, collection and fishing flux of underwater organisms such as plankton, improving the accuracy of the sampling and fishing net flux for underwater biological population surveys, further improving the coordination and control capabilities of the collection flux and the underwater biological density, increasing the use range of the sampling and collection device, and further reducing the damage of the sampling device to the underwater ecology; In addition, with the folding and stretching of the fishing net 13, the collection device can realize the change and adjustment of various fishing opening forms, thereby improving the ability of the collection device to resist the collision and blockage of large underwater organisms and debris during use, increasing the service life of the collection device, and reducing the difficulty and cost of maintenance.

[0024] The fishing net 13 is made of elastic deformable material; The elastic deformation of the fishing net 13 can adapt to the folding and stretching process, and when the net support 12 is deflected relative to the collecting tube 10, it can maintain a good spreading effect, thereby improving the structural shape stability of the conical channel, while improving the ability to resist impact and scratches during the fishing process, reducing the influence of underwater environmental conditions on the conical channel during the collection and fishing process, improving the stability of the underwater sampling and fishing flux, and further improving the sampling and fishing efficiency and accuracy of the collection device.

[0025] Refer to the attached Figure 1 and attached Figure 6 As shown, a sampling cylinder 40 is provided at the other end of the sampling and analysis channel 11, a sampling cavity 41 is provided in the sampling cylinder 40, a water-permeable layer 42 is provided at one end of the sampling cavity 41 away from the collecting tube 10, a docking arm 50 is provided on the collecting tube 10, a docking mounting seat 47 is slidably connected to the docking arm 50 through a spring, the sampling cylinder 40 is fixedly connected to the docking mounting seat 47, the docking arm 50 guides the sampling cavity 41 to dock with the sampling and analysis channel 11, and the end of the sampling cylinder 40 facing the collecting tube 10 cooperates with the end of the sampling and analysis channel 11; One end of the docking arm 50 is fixedly connected to the collection tube 10, or according to actual needs, the docking arm 50 can be arranged on the collection tube 10 in a manner that it can change its docking position relative to the collection tube 10 while following the movement of the collection tube 10. The other end of the docking arm 50 is slidably connected to the docking mounting seat 47. The docking arm 50 is slidably connected to the docking mounting seat 47 through a sliding groove and a spring. The sampling tube 40 is clamped on the docking mounting seat 47. Under the action of the spring and the sliding groove provided on the docking arm 50, after the docking arm 50 guides the direction to align with the collection tube 10, the spring guides the docking mounting seat 47 clamping the sampling tube 40 to approach the collection tube 10, and under the elastic force of the spring, the sampling cavity 41 is kept docked with the sampling analysis channel 11, so that the plankton that has been caught by the collection device and passed through the sampling analysis channel 11 is collected by the sampling tube 40; The collection tube 10 and the sampling tube 40 are clamped and matched by the docking arm 50 and the docking mounting seat 47 to realize a detachable connection between the sampling tube 40 and the collection tube 10, so that the sampling cavity 41 and the sampling and analysis channel 11 can be docked according to actual needs, so that the captured plankton is collected through the sampling tube 40; if an automatic analysis probe is provided in the sampling and analysis channel 11 to automatically analyze and investigate the plankton passing through the sampling and analysis channel 11, a driving component can be provided on the collection tube 10 to control the relative position between the docking arm 50 and the collection tube 10, so that the sampling cavity 41 and the sampling and analysis channel 11 are driven to disengage or dock to form a connection by controlling the docking arm 50 and the docking mounting seat 47 through the driving component; The separate cooperation between the sampling tube 40 and the collecting tube 10 can effectively reduce the demand for plankton fishing and collection during the automated analysis and investigation of plankton, and greatly reduce the demand for manual operation of plankton collection and investigation; at the same time, it can simplify the collection, fishing and bottling and storage operations of biological samples, reduce the probability of leakage during the collection of biological samples, greatly improve the efficiency and accuracy of the collection device for sampling, fishing, analysis and investigation of underwater organisms such as plankton, improve the rationality of the collection amount of biological samples, reduce the frequency of filtering and collecting plankton by the collection device during the sampling and fishing process, improve the patency of the biological flow path during the collection and fishing process, reduce the disability and mortality rate of plankton caused by fishing actions such as docking and filtering, reduce the contact damage of the collection device flow path to the collected organisms, and further reduce the damage to the underwater ecology caused by the collection device sampling and analysis; In addition, reasonable biological flow flux control of the collection device can effectively reduce the density of aquatic organisms in the flow path, reduce the swimming stress of aquatic organisms when passing through the collection device, improve the accuracy of aquatic biological analysis and investigation, reduce the difficulty of analysis and processing of automated collection and analysis of aquatic biological populations, and improve the automation expansion performance of the collection device.

[0026] See attached Figure 1 and attached Figure 6 As shown, a backwash cover 45 is fixedly connected to the collecting pipe 10, and a backwash channel 46 is provided in the backwash cover 45. The backwash channel 46 guides the water to flow toward the sampling and analysis channel 11 and the tapered channel; A backwash hood 45 is fixedly connected to the left end face of the collecting pipe 10. When the sampling tube 40 is disengaged from the collecting pipe 10, the water flow is guided into the sampling and analysis channel 11 through the backwash channel 46. When the collecting device moves in the opposite direction of the collecting and fishing direction driven by the ship, the water flow and underwater organisms enter the sampling and analysis channel 11 through the backwash channel 46 and then flow out in the conical channel. At this time, in the process of the reverse flow of the water flow of the collecting device relative to the water flow, the water flow flushes the sampling and analysis channel 11 and the inside of the conical channel of the collecting device, and the collecting device can be reversely cleaned. In addition, in the process of the reverse movement of the collecting device, the coarse filter plate 15 is under the action of inertia, and the coarse filter plate 15 swings around the hinged position at the upper end of the conical channel opening to maintain the backwash opening of the conical channel, thereby improving the simplicity of the dredging process of the collecting device, reducing the probability of clogging and damage of the collecting device, and increasing the service life of the collecting device, further reducing the demand for manual operation, and improving the efficiency of the aquatic organism sampling and analysis process; In addition, when switching between different water environments, the collection device is moved by using a boat. During the backwashing process, the possibility of plankton attaching to the collection device can be reduced, and the fishing status of the collection device can be reset and emptied, thereby improving the reliability of the collection device in switching between multiple water conditions, improving the accuracy of the collection device in resetting collection and fishing, improving the accuracy of biological collection and retention, and improving the accuracy of aquatic biological survey and analysis results.

[0027] See attached Figure 6 As shown, the sampling chamber 41 is provided with an automatic sealing cover 43, and a sealing spring 44 is fixedly connected between the automatic sealing cover 43 and the side wall of the sampling chamber 41. The automatic sealing cover 43 closes the conduction state between the sampling chamber 41 and the sampling and analysis channel 11 under the condition of low water flow impact, and the sealing spring 44 drives the automatic sealing cover 43 to keep the sampling chamber 41 closed; Under the elastic force of the sealing spring 44, the automatic sealing cover 43 always remains in contact with the right end of the sampling chamber 41, so that the sampling chamber 41 remains in a closed state. When the sampling tube 40 and the collecting tube 10 are docked, the water flow flowing from the conical channel through the sampling and analysis channel 11 to the sampling tube 40 impacts the automatic sealing cover 43, driving the sealing spring 44 to expand and contract, thereby opening the sampling chamber 41. When the water flow impact is small, the automatic sealing cover 43 always maintains a position state in which the opening of the sampling chamber 41 is closed, and can automatically close the sampling chamber 41 under speed control, thereby reducing the frequency of plankton collection, improving the utilization efficiency of the aquatic organism collection space, reducing the need for manual intervention in the aquatic organism collection, improving the convenience and efficiency of the collection device, and at the same time reducing the possibility of aquatic organisms blocking the collection process, thereby improving the stability and safety of the device.

[0028] See attached Figure 6 As shown, a resistance-increasing telescopic rod 48 is fixedly connected to the docking mounting seat 47, and a flow-blocking member 49 is rotatably connected to the other end of the resistance-increasing telescopic rod 48. The docking mounting seat 47 is hinged to the flow-blocking member 49, and the resistance-increasing telescopic rod 48 controls the deflection angle of the flow-blocking member 49 relative to the axial direction of the sampling tube 40; After the resistance-increasing telescopic rod 48 controls the deflection angle of the flow-blocking member 49 in the horizontal direction, the water flow impacts the flow-blocking member 49 to generate thrust, thereby driving the docking mounting seat 47 to slide relative to the docking arm 50, thereby driving the sampling tube 40 to move to the collecting tube 10 first, thereby realizing the docking and separation between the sampling tube 40 and the collecting tube 10, which can reduce the control convenience of the assembly docking and separation process, reduce the need for the collection device to be separated from the underwater environment during the assembly process, improve the efficiency of the collection device in collecting aquatic organisms underwater, and improve the use efficiency of the collection device.

[0029] Embodiment 2 The telescopic rod 29 and the resistance-increasing telescopic rod 48 can be arranged on the collection device using structures such as inner and outer tube control pull wires, thereby reducing the difficulty of wiring assembly of the sampling and fishing control drive and improving the waterproof performance of the collection device. When an automated analysis probe is provided in the sampling and analysis channel 11, the sealing and packaging performance of the electrical components of the collection device can be further improved, and the adaptability of the automated control expansion can be improved; In addition, special motion drive components such as depth adjustment and angle adjustment can be installed on vessels such as ships on which the collection device is carried, so that the mounting seat 14, the yaw base 28 and the docking mounting seat 47 are integrated on the drive component, further reducing the independence of the components of the collection device, reducing maintenance and interchange costs, isolating the depth of correlation between the motion drive adjustment and the collection and fishing movements of the components, and can improve the convenience and difficulty of installing the collection device on vessels such as ships, and improve the stability of the sampling performance of the collection device and the sampling and fishing effect.

[0030] The above are only exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes made by a person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A separation type plankton sample collection device, comprising a collection tube (10), wherein a sampling and analysis channel (11) is provided in the collection tube (10), a net support (12) and a fishing net (13) are provided at one end of the collection tube (10), wherein the net support (12) and the fishing net (13) form a conical channel, wherein the conical channel guides aquatic organisms to pass through the sampling and analysis channel (11), wherein: The net support (12) is provided with a folding drive wheel (20) and a sliding wire (21); the folding drive wheel (20) is dynamically connected to the sliding wire (21); a group of sliding reinforcement blocks (22) are slidably connected to the sliding wire (21); the other end of the sliding reinforcement block (22) is fixedly connected to the fishing net (13); one of the sliding reinforcement blocks (22) farthest from the collecting pipe (10) is fixedly connected to the sliding wire (21); and the sliding wire (21) can drive the fishing net (13) to stretch and fold along the axial direction of the net support (12).

2. A separation type plankton sample collection device as claimed in claim 1, characterized in that: The end of the fishing net (13) away from the collecting pipe (10) is provided with a coarse filter plate (15), the upper end of the coarse filter plate (15) is hinged to the net support (12), and the coarse filter plate (15) blocks a larger volume of collected objects from entering the conical channel.

3. A separation type plankton sample collection device as claimed in claim 1, characterized in that: The right end of the collecting pipe (10) is hingedly connected to the net support (12); a deflection base (28) is provided on the collecting pipe (10); a telescopic rod (29) is fixedly connected to the deflection base (28); the other end of the telescopic rod (29) is fixedly connected to the net support (12); the telescopic rod (29) adjusts the deflection angle of the net support (12) relative to the collecting pipe (10).

4. A separation type plankton sample collection device as claimed in claim 3, characterized in that: The fishing net (13) is made of elastically deformable material.

5. A separation type plankton sample collection device as claimed in any one of claims 1 to 4, characterized in that: A sampling cylinder (40) is provided at the other end of the sampling and analysis channel (11), a sampling cavity (41) is provided in the sampling cylinder (40), a water-permeable layer (42) is provided at one end of the sampling cavity (41) away from the collecting tube (10), a docking arm (50) is provided on the collecting tube (10), the other end of the docking arm (50) is slidably connected to a docking mounting seat (47) via a spring, the sampling cylinder (40) is fixedly connected to the docking mounting seat (47), and the docking arm (50) guides the sampling cavity (41) to dock with the sampling and analysis channel (11).

6. A separation type plankton sample collection device as claimed in any one of claims 1 to 4, characterized in that: A backwash cover (45) is fixedly connected to the collecting pipe (10), and a backwash channel (46) is provided in the backwash cover (45). The backwash channel (46) guides water to flow toward the sampling and analysis channel (11) and the tapered channel.

7. A separation type plankton sample collection device as claimed in claim 5, characterized in that: The sampling chamber (41) is provided with an automatic sealing cover (43), and a sealing cover spring (44) is fixedly connected between the automatic sealing cover (43) and a side wall of the sampling chamber (41), and the sealing cover spring (44) drives the automatic sealing cover (43) to keep the sampling chamber (41) closed.

8. A separation type plankton sample collection device as claimed in claim 5, characterized in that: A resistance-increasing telescopic rod (48) is fixedly connected to the docking mounting seat (47); the other end of the resistance-increasing telescopic rod (48) is rotatably connected to a flow-blocking member (49); the docking mounting seat (47) is hinged to the flow-blocking member (49); and the resistance-increasing telescopic rod (48) controls the deflection of the flow-blocking member (49).

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